This inventor holds 1 USPTO granted patent. Top assignees: Conoco Inc., E.i. Dupont De Nemours and Company. Active years: 1988.
Company Filing History:
1 out of 860 
1 out of 16,339 
Years Active: 1988
Title: The Innovations of John L Fitzjohn
Introduction
John L Fitzjohn is a notable inventor based in Wilmington, DE (US). He has made significant contributions to the field of fluid diversion technology, particularly through his innovative patent. His work has implications for various industries, including oil and gas.
Latest Patents
Fitzjohn holds a patent for a process titled "Colloidal silica-based fluid diversion." This invention involves selectively plugging permeable zones in subterranean formations or addressing subterranean leaks. The process includes injecting an aqueous solution containing 1 to 70 weight percent of a non-aggregated colloidal silica sol, which has a particle size ranging from 4 to 100 nm and a pH between 1 and 10. The solution is designed to gel in the targeted zone or site, providing an effective method for managing fluid flow in geological formations. He has 1 patent to his name.
Career Highlights
Throughout his career, Fitzjohn has worked with prominent companies such as Conoco Inc. and E.I. DuPont de Nemours and Company. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in fluid management technologies.
Collaborations
Fitzjohn has collaborated with notable professionals in his field, including Karl E Bennett and Richard A Harmon. These partnerships have likely enhanced his research and development efforts, leading to successful innovations.
Conclusion
John L Fitzjohn's contributions to the field of fluid diversion technology demonstrate his expertise and innovative spirit. His patent for colloidal silica-based fluid diversion showcases his ability to address complex challenges in subterranean formations. Fitzjohn's work continues to influence the industry and pave the way for future advancements.